The Culligan® R50-BBSA coarse particles filter cartridge reduces sediment, rust, scale, dirt and coarse sand. The replacement cartridge is for use in the HD-950A and WH-HD200-C. The filter is recommended for use with city and well water supplies. The cartridge life is up to 6 months or 24,000 gallons. | Culligan | | Coarse Whole Home Heavy Duty 1" Replacement Filter | White | Best Buy